Pressure sensor with resonant vibration preventing means

Details Pressure sensor with resonant vibration preventing means Pressure sensor with resonant vibration preventing means

1993-02-02

1998-04-21

Dombroske, George M.

Measuring and testing

Fluid pressure gauge

With protective separator

73727, 73726, 73115, 338 42, G01L 708

Patent

active

057419744

ABSTRACT:
A pressure sensor comprising a hollow main body (1) defining a bore (3) extending therethrough. A pressure sensing assembly (12) is disposed within the bore (3) to divide it into a detection cavity (3a) for transmitting therethrough the pressure to be detected at a pressure receiving end (3c) thereof and an output cavity (3b) through which an output signal from the pressure sensing assembly (12) is to be supplied. A flexible metal diaphragm (40) is attached to the main body (1) at the pressure receiving end (3c) to seal the detection cavity (3a) in which a pressure transmitting medium (11) is filled. The flexible metal diaphragm ( 40) has a resonance frequency above an oscillation frequency range of the pressure to be detected. Preferably, the effective diameter of the diaphragm (40) may be from 7.5 mm to 8.5 mm and the thickness dimension thereof may be from 35 .mu.m to 45 .mu.m.

REFERENCES:
patent: 5161415 (1992-11-01), Kodama et al.
patent: 5212989 (1993-05-01), Kodama et al.
patent: 5222397 (1993-06-01), Kodama

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